Office lady Nozomi Hazuki had been engaged in an affair with her boss, but suddenly gets transferred to a branch office, thrust into a new environment. There she meets salesman Ichijo, who quickly recognizes her masochistic nature and begins strict training, demanding she call him "Master." Nozomi, broken by humiliation and anal pleasure, surrenders her will completely, obeying every command without resistance. Her descent from a simple affair into total domination and sexual slavery unfolds in vivid detail.